Brush having detachable sections



June 13, 1961 R. OTT

BRUSH HAVING DETACHABLE SECTIONS Filed Oct. 21, 1959 IJIHP ITHHUH. i

INVENTOR ROBERT OTT United States Patent 'O 2,987,744 BRUSH HAVING DETACHABLE SECTIONS Robert Ott, Rheinau, Switzerland Filed Oct. 21, 1959, Ser. No. 847,846

4 Claims. (Cl. 15-202) The object of the invention is a brush with exchangeable or easily detachable bristle part, distinguished from known types of brushes in that rows of bristles arranged transversely to the longitudinal direction of the brush body are inserted as exchangeable elements in longitudinal guides of the brush body and detachably clamped to it by means of a clamping device connecting the parts, in such a way that on loosening of the clamping device the elements can be easily replaced.

The drawing shows an example of an embodiment of the object of the invention, and in the drawing:

FIG. 1 is a side view of the brush,

FIG. 2 is the appropriate plan view from the bristle sid FIG. 3 is a part of a longitudinal section along the line 111-111 of FIG 2,

FIG. 4 is a cross-section along the line IV-IV of FIG. 2,

FIGS. 5-7 show details, in particular FIG. 6 shows a longitudinal section of a detail according to FIG. 7.

FIG. 8 is a front view of an element made of rubber bristles, and

FIG. 9 is the appropriate plan view.

In the brush shown here, 1 denotes the brush body, which may be made in one piece with the handle 2 of metal or plastic. The brush body has raised longitudinal edges 3, which form a dovetailed slot 4, for inserting the brush elements 5. The latter are equipped with a dovetailed projection 6 of plastic, forming the part holding the bristles together. The elements pushed into the brush body form rows of bristles transverse to the longitudinal direction of the brush body, either at right angles or, as shown here, inclined with respect to the longitudinal direction of the brush body 1. Air gaps 7 are left between the bristle rows, and secured by means of distance pieces 8. The inner end of the dovetail slot 4 is bounded by an abutment 9, while the outer end of the guide slot is open. The foot of the brush elements 5 and the distance pieces 8 are provided with two bores 10, with some space between them, and a clamping cable 11 made of steel, brass or nylon is drawn through the bores. The cable can be tightened by a clamp 12, whose lever 14, pivoted about a pin 13, makes in its tightened position (FIGS. 1 and 2) contact with the brush handle 2. The ends of the clamping cable 11 are anchored in a clamping jaw 15. They pass through two bores in the clamping jaw and are clamped in the bores by a U-shaped clamping yoke 16. The yoke legs engage them with longitudinal slots 17 of the clamping jaw 15. The brush elements 5 and the distance pieces 8 are secured by the clamping jaw against dropping out of the guide 4 and pulled by the tightening of the clamp 12 by means of the lever 14 against the abutment 9 and clamped together.

By loosening the clamp 12, 14, as shown in FIG. 3, the clamping cable 11 is slackened, so that the clamping jaw 15 can be taken out of the guide 4 and off the clamping cable 11 by taking out the clamping yoke 16. After detaching the clamping yoke, the elements 5 and the distance pieces 8 can be pushed out of the guide 4 and exchanged.

The brush may be equipped with a set of elements with steel wire, brass wire, nylon bristle, natural bristle, or coiled strips of rubber, leather, or textile bristle, so that the brush can be equipped with the most suitable type of bristle for the given purpose. It can also be equipped with elements of difiereut consecutive types of bristles,

forming a sequence, so that the types of bristles vary as regards their nature or their degree of fineness, or are grouped in any other way.

In the case of elements with rubber, leather or textile coils or bristle the latter can be inserted in the form of tufts 18 in the holes or bores 19 of a dovetail foot 20, and secured in it by means of a transverse pin 21, 'as shown in FIGS. 8 and 9. In this case the tufts 18 are formed by coils of strip-like sections, as shown in particular in FIG. 9.

.According to the purpose of the brush, the most convenient combination of groups of bristles is selected, and made up of elements which may have, say, brushes of difierent degree of fineness, and elements with worn bristles can easily be replaced, by new ones.

While the invention has been described in detail with respect to a now preferred example and embodiment of the invention it will be understood by those skilled in the art after understanding the invention, that various changes and medications may be made without departing from the spirit and scope of the invention and it is intended, therefore, to cover all such changes and modifications in the appended claims.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. A brush body with an interchangeable and easily detachable bristle part comprising in combination rows of bristles, said rows of bristles being transverse to the longitudinal direction of the brush body and being inserted as exchangeable elements into longitudinal guides of the brush body, said exchangeable elements being clamped together by means of a clamping device detachably connecting them together in such a way that said exchangeable elements can be replaced on loosening of said clamping device, said clamping device being equipped with a clamp formed by a lever.

2. A brush body with an interchangeable and easily detachable bristle part comprising in combination rows of bristles, said rows of bristles being transverse to the longitudinal direction of the brush body and being inserted as exchangeable elements into longitudinal guides of the brush body, said exchangeable elements being clamped together by means of a clamping device detachably connecting them together in such a way that said exchangeable elements can be replaced on loosening of said clamping device, said brush body being equipped with guides for retaining said brush elements, guides in said brush body are forming a dovetail slot and said brush elements, equipped with a corresponding dovetail being inserted in said guides alternating with distance pieces and clamped together in such a way that air gaps are formed between said rows of bristles.

3. A brush body with an interchangeable and easily detachable bristle part comprising in combination rows of bristles, said rows of bristles being arranged transverse to the longitudinal direction of the brush body and being inserted as exchangeable elements intolongitudinal guides of the brush body, said exchangeable elements being clamped together by means of a clamping device detachably connecting them together in such a way that said exchangeable elements can be replaced on loosening of said clamping device, said clamping device being equipped with a clamp formed by a lever, said clamp being equipped, for clamping said elements, with a clamping cable passing through guide bores in feet of said elements, and carrying at its outer end a detachable dovetailed clamping jaw, by means of which said elements are pushed against a cross-piece provided at the inner end of said dovetail slot and acting as an abutment.

4. A brush body with an interchangeable and easily detachable bristle part comprisng in combination rows of bristles; said rows of'bristle'sbeing arranged transverse to-the longitudinal direction of the brush'body and beinginsertedas exchangeable elements into longitudinal guides of the brush body, said exchangeable elements being said clamping device, said brush body being equipped-With guides for retaining said brush elements, the guides in said 1 brush body forming a dovetailslot, and said brush ele--- ments equipped with a corresponding dovetail fo'ot being inserted in said guides alternating with distance pieces and clamped tbgeth'er' in' such a waythat air gaps are formed between saidrows of bristles, thedbrush rows being inclined with respect to'the longitudinal direction of said brush body'and being pushed into said guides.

412,876 Cdst ello a Oct.-l5, 1889 1,417,811 ElliOt---; May 30, 1922 FOREIGN PATENTS 43 0,709 

